Alright I Need My Laptop Nerds! <3?

Ok, so I recently reformatted my friends laptop to a whole new operating system. Due to him getting a virus after his old one expired. The virus wouldn’t let me install and run any anti-virus programs or run malwarebytes. So I just reformatted it and installed a new windows 7 64 bit on his laptop. Before I go on, here is the info from PC Wizard.

Mainboard : ASUSTeK Computer Inc. K50IJ
Operating System : Windows 7 Home Premium Home Edition Media Center 6.01.7601 Service Pack 1 (64-bit)
Chipset : Intel GL40
Processor : Intel Pentium T4500 @ 2300 MHz

Type of mouse : ELAN PS/2 Port Smart-Pad
General Information :
Buttons number : 8
Settings :
Wheel : Yes
Scrolling : 3 Lines
Buttons reversed. : No
Cursor : 32×32 pixels
Features :
Double-click speed : 500
TRAILS : No
SONAR : No
VANISH : Yes
SHADOW : Yes
X/Y Threshold : 6/1
PEN Windows : No
Accessibility :
Function Activated : No

Ok, so here is the problem. Everytime I go to plug in his ASUS laptop I have a huge problem with his touchpad. When I go to put my finger on it, the curser just goes nuts! I don’t even have to move my finger, it just spazzes out. This only happens when I plug in the laptop to charge it. When I unplug it the curser is fine. I even tried go on the site for the laptop to get the drivers.
http://www.asus.com/Notebooks_Ultrabooks/K50IJ/#support_Download
I even went on the ELAN website, and they told me to go on the manufactures website. I need to get this thing fixed before I get it back to him so he can use it for school. Thank you so much for your help guys!